islamapoligsts argue that Islam has rules and regulations on slavery which made treatment of slaves in Islamic societies better than other societies, does anyone have any knowledge of this?

I am not aware of any Christian suicide bombers. I am not aware of any major Christian denomination that believes the penalty for apostasy is death. I have mixed feelings about the decline of Christianity, in so far as Christianity might be a bulwark against something worse.”Richard Dawkins

Not even Islam can make a silk purse out of a sow's ear.It would, anyway, be haram to try.

‘Hindus and Muslims belong to two different religious philosophies, social customs and literary traditions. They neither intermarry nor eat together, and indeed they belong to two different civilisations which are based mainly on conflicting ideas and conceptions.’ Muhammad Ali Jinnah